RE: Performance Degradation

Hi Henry ,

With respect to the limitation of number of files in a directory is not
mentioned in any CIFS/SMB document, because as per my knowledge goes , there
is no limit for number of files to be present in a folder, but there are
limitations with respect to folders and not files

Yes , i have personally seen many instances where performance degrades when
there are large number of files in a folder, and the possible solution would
be

a) updating the shell32.dll, because , when you access a particular share
using explorer , windows uses shell32.dll to open up the shared directory and
populate the files in the explorer which uses shell32.dll. Hence the only
possible solution is use to updgrade the shell32, but even if the issue is
occuring using latest shell32.dll version, then we would suggest to move some
files to the different folders.

Regards,
Sainath SMB KID

"Henry" wrote:

Hi,

I have come across several instances where a customer has an extremely large
number of files in a 1-2 level directory structure and the file system
performance has been very slow. In each instance I discovered the number of
files and directories within the 1-2 level directory structure was in excess
of 900,000.

I moved some of the files and folders in an attempt to get this number down
to below 300,000 in the original directory structure and performance was once
again acceptable.

All file systems were NTFS created on fresh W2K3 servers.

My questions are that judging from what I have seen there is a theoretical
limit on the number of files that are contained within a directory before
performance issues will arrise.

Is this number documented anywhere? (By MS or another source)
Has anyone had (or heard of) similar issues resulting from a large number of
files in a 1-2 level directory structure.

Thanks in Advance,
--
Henry
.

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